- var_dump: documentation ( source)
<?php
class JhDateTime extends DateTime {}
$date1 = new JhDateTime("10 September 2014");
$date2 = new JhDateTime("17 December 2014");
$period = new \DatePeriod(
$date1 ,
new \DateInterval("P1M"),
$date2
);
foreach($period as $date) {
var_dump(get_class($date));
}